Has anybody seen these Vivitar lenses? They seem really cheap, and I'm not sure if they are an internet scam or not. I went on the vivitar site, and wasn't able to find if they actually work on the z7u

Vivitar Series 1 High Definition Wide Angle Fisheye 0.21x Lens + Vivitar Series 1 High Definition 3.5X Telephoto Lens

You get what you pay for most of the time.

As long as it is 72mm threads it should work. Personally I would just as cautious of where I purchase something cheap as the cheap brand I am purchasing.

There are a lot of "stores" online selling "new" camera & video equipment at cheap prices that will just give you a head ache & can ruin your credit card.